Check out the cutaway of a 235 head featured on another thread. Putting a fancy intake and exhaust and multiple carbs on a head that can't flow enough volume to make much power is "lipstick on a pig!. Good eye candy, but it's a losing bet.
http://s176.photobucket.com/user/curt160/media/848%20head/000_3183_zpsbb42b3bb.jpg.htmlI have a tendency to doubt the motives and the advertising claims of anyone who wants to solve all my problems by selling me something!
Jerry